WASHINGTON (JTA) — Israel’s role in the cyber-sabotage of Iran’s nuclear weapons development could hinder a leaks prosecution.

On Wednesday, the Washington Post reported that the inquiry by the U.S. government into whether James Cartwright, a retired general in the U.S. Marines, leaked the information about the Stuxnet virus to The New York Times was stalled, among other reasons, over fears that moving forward would expose Israeli secrets.

The computer virus, first discovered in 2010, sabotaged uranium-enriching centrifuges. It has been widely attributed to the United States and Israel, working in tandem, but neither country has acknowledged responsibility.